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SC(B) series 30~2500kVA resin insulated dry-type power transformer

SC(B) series 30~2500kVA resin insulated dry-type power transformer adopts epoxy resin vacuum casting, fire rating F class. Suitable for hospitals and data centers, capacity 30kVA-2500kVA, partial discharge <10pC, noise ≤60dB.
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Understanding the SC(B) Transformer


Compact & Safe Power Solution

The SC(B) resin dry-type transformer is a compact, safe, and efficient power solution designed for spaces with strict safety and size constraints. As a 30~2500kVA dry-type power transformer, it targets medium-to-small load demands, making it ideal for hospitals, schools, and high-rise buildings. Its compact design fits into small electrical rooms, eliminating the need for large dedicated spaces, while its safety features prioritize the protection of occupants and equipment.


Adaptability to Humid Environments

Unlike many transformers that struggle with moisture, the SC(B) series excels in humid environments— moisture-resistant windings allow operation under high relative humidity, solving a common problem in tropical or coastal regions. This adaptability makes it a reliable choice for areas where humidity could compromise the performance of standard transformers, ensuring consistent power supply regardless of environmental conditions.


SC(B) series 30~2500kVA resin insulated dry-type power transformer


Characteristic Description of SC(B) Transformer


Oil-Free & Environmentally Friendly Design

At its core is the oil-free design, which not only eliminates fire risks but also prevents oil leakage— complying with GB 2536-2011 and making it an environmentally friendly transformer. When exposed to fire, it releases minimal smoke (smoke density <50), enhancing safety in enclosed spaces. The absence of oil also reduces environmental impact, aligning with green building and sustainability standards.


Efficient Heat Dissipation System

For heat dissipation, the transformer uses efficient heat dissipation with aluminum heat sinks and axial fans, boosting cooling efficiency by a significant margin. This system enables temporary overloads without overheating, ensuring stability during peak power demands. The combination of passive heat sinks and active fans balances energy efficiency and cooling performance, even in high-load scenarios.


Durable Winding Construction

Windings are copper foil-wound, increasing mechanical strength and moisture resistance— critical for harsh conditions and long service life. The copper foil design ensures uniform current distribution, reducing hot spots and minimizing energy loss. This durable construction also enhances resistance to vibration and electrical stress, extending the transformer’s operational lifespan.


Intelligent Temperature Management

Another key feature is intelligent management via an integrated temperature controller, which automatically starts/stops cooling fans based on internal temperatures. This optimizes energy use by activating fans only when necessary, reducing wear and lowering operational costs. The controller also supports RS485 communication, enabling remote monitoring and integration with building management systems.


Low Noise & Low Partial Discharge

The SC(B) series boasts low partial discharge (<10pC) and low noise (<60dB), ensuring quiet operation without electrical interference. This makes it perfect for hospitals, schools, and residential buildings, where noise pollution and electrical disturbances must be minimized. The low partial discharge also enhances insulation integrity, reducing the risk of breakdown and extending service life.


Technical Parameters of SC(B) Transformer


Capacity & Insulation Specifications

The SC(B) dry-type transformer features a rated capacity range of 30kVA to 2500kVA, catering to medium-to-small loads from small schools to large hospital wings. The insulation system uses high-quality epoxy resin applied via vacuum casting for uniform coverage and moisture resistance— meeting indoor safety standards for enclosed spaces.


Cooling & Control Integration

Cooling combines aluminum heat sinks and axial fans (forced air cooling, FA) to maintain safe temperatures under peak loads. The integrated intelligent temperature controller with RS485 communication enables remote monitoring and control, allowing operators to adjust settings and track performance from a centralized platform. This integration enhances operational efficiency and reduces maintenance requirements.


Safety & Environmental Compliance

The transformer complies with GB 2536-2011 for fire safety and environmental performance, with partial discharge below industry thresholds for stable operation. Its oil-free design and low smoke emission meet strict safety codes for indoor use, while its energy-efficient operation aligns with global sustainability initiatives.


Typical Uses of SC(B) Transformer


Healthcare & Educational Institutions

In hospitals, the SC(B) transformer powers elevators, fire safety equipment, and patient monitors— low noise and fire safety avoid disrupting care or posing risks. In schools, indoor installation and quiet operation prevent interference with classrooms or offices, while its compact design fits into limited electrical rooms.


High-Rise Building Power Supply

In high-rise buildings, the transformer’s compact design fits small electrical rooms, and its moisture resistance suits humid climates. It powers essential systems like lighting, HVAC, and elevators, ensuring reliable operation for residents and tenants. The fire-safe design aligns with high-rise building fire codes, enhancing overall safety.


Medium-Load Data Centers

For medium-load data centers, low partial discharge and stable voltage protect sensitive IT equipment from damage or data loss. The compact design maximizes usable space, while intelligent temperature control ensures optimal operating conditions for servers and storage devices. The transformer’s efficiency also reduces energy costs for data center operators.


Humid Region Applications

In humid regions (coastal or tropical areas), moisture-resistant windings ensure reliable operation under high humidity. It is used in commercial complexes, residential towers, and industrial facilities, providing a consistent power supply regardless of environmental moisture levels. This adaptability makes it a versatile choice for geographically diverse applications.


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